Java Spring Webflux，记录出站http调用所用的时间

import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;

public class OutboundHttpCallExample {
    public static void main(String[] args) {
        // 创建WebClient对象
        WebClient webClient = WebClient.create();

        // 发起HTTP请求并记录时间
        long startTime = System.currentTimeMillis();
        Mono<String> responseMono = webClient.get()
                .uri("https://example.com/api")
                .retrieve()
                .bodyToMono(String.class);
        long endTime = System.currentTimeMillis();

        // 打印响应结果和时间
        responseMono.subscribe(response -> {
            System.out.println("Response: " + response);
            System.out.println("Time taken: " + (endTime - startTime) + "ms");
        });
    }
}